Build a Monochron Clock Kit

You’ll need some basic soldering & hand tools to assemble the Monochron. The good news is that this is a pretty basic kit and even if it’s your first soldering project, it shouldn’t take more than 2 or 3 hours to put together.

Step #4:

Make sure you use enough solder. This is an electrical and mechanical connection

Next add a 1N4001 protection diode to D1. Diodes only conduct electricity in one direction, so its important to orient it correctly.

The white stripe at one end is the cathode. On the PCB there is a silk-screened diode and it has a matching white stripe. Make sure to match the silkscreen stipe of the diode to the stripe on the actual diode.

Add the 7805 voltage regulator to the area labeled IC2. Orient the regulator to the silk-screened outline on the PCB.

Step #6:

C2 is the 47uF/25V electrolytic capacitor. Electrolytic capacitors are polarized. They need to be oriented properly. The capacitor has one leg that is longer than the other leg. This longer leg is the positive (+) lead. Make sure to place the capacitor into the spot labeled C2 and the long leg goes into the hole labeled "+". Double check!

Once you insert the leads in the proper spots, bend the capacitor to lay flat behind the power jack. (See picture.)

C4 is a 100uF/6.3V electrolytic capacitor. This needs to be oriented the same as the other capacitor. Make sure the long lead goes in the hole labeled "+" at C4. Again, double check!! No need to lay this one flat.